Theme cruises get more popular — and more elaborate — every year. Case in point: January 2016 saw the first zombie-filled journey with the stars of "The Walking Dead" and 2017 will see the first-ever "Star Trek" cruise. (Yes, William Shatner will be there. And it's already sold out). Even with new entries onto the scene, there are perennial favorites as well, such as the groovy Moodies Cruise, featuring the Moody Blues and friends, that takes place in late February. Whether you are a fan of boy bands or the Bard, there's still a themed cruise for you this year. For even more options, check out our 10 themed river cruises to take in 2016.